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Java

Posted by Sagnika Mishra
Sagnika Mishra
935 Points

Not able parse Xml using SAX parser in java. While fetching the end Element getting EmptyStackException.

Dummy code ....

Sagnika Mishra
Sagnika Mishra
935 Points

Dummy Java code below and also the xml is in below trail. package new.parser;

import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.EmptyStackException; import java.util.Iterator; import java.util.Stack;

import javax.xml.parsers.ParserConfigurationException; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes; import org.xml.sax.SAXException; import org.xml.sax.helpers.DefaultHandler;

public class ReadXMLFileUsingSaxparser extends DefaultHandler {

//private Account acct;
//private String temp;
//private ArrayList<Account> accList = new ArrayList<Account>();

private Stack<String> elementStack = new Stack<String>();
private Stack<Object> objectStack = new Stack<Object>();
private int recordLevel=1;
String name="";
String fileName ="Jaguar";

public static void main(String[] args) throws IOException, SAXException,
        ParserConfigurationException {

     SAXParserFactory factory = SAXParserFactory.newInstance();
        try {
            InputStream    xmlInput  =
                new FileInputStream("D:\\host\\240\\exa206.XML");

            SAXParser      saxParser = factory.newSAXParser();
            ReadXMLFileUsingSaxparser handler   = new ReadXMLFileUsingSaxparser();
            saxParser.parse(xmlInput, handler);


        } catch (Throwable err) {
            err.printStackTrace ();
        }
}

public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
    recordLevel++;

    name = localName;

    if(recordLevel ==2){
    this.elementStack.push(qName);

    int length = attributes.getLength();
    // process each attribute

    for (int i = 0; i < length; i++) {

        String name = attributes.getQName(i);

        String value = attributes.getValue(i);
        System.out.println("name IS :"+ name+"  Value:" + value);

    }
    }
    if(!name.equals(qName)){

          int length = attributes.getLength();
          // process each attribute


                    for (int i=0; i<length; i++) {

                          String name = attributes.getQName(i);

                          String value = attributes.getValue(i);
                          System.out.println("Value:" + value);

                    }
    }

}

public void endElement(String uri, String localName, String qName) throws SAXException {

     try{
if(!name.equals(qName)){

    System.out.println("uri : " +uri +"localName : " +localName +"qName : " + qName);
    this.elementStack.pop();
     }
     }
     catch(EmptyStackException e){
     e.printStackTrace();
     }
}

public void characters(char ch[], int start, int length) throws SAXException {

    String value = new String(ch, start, length).trim();
    if (value.length() == 0)
        return; // ignore white space

}

private String currentElement() {
    return this.elementStack.peek();
}

private String currentElementParent() {
    if (this.elementStack.size() < 2)
        return null;
    return this.elementStack.get(this.elementStack.size() - 2);
}

}

Below given is the sapmple xml:


   <?xml version="1.0" encoding="UTF-8" ?>
    <Record recordType="2"> 
    <Mnt_action>A</Mnt_action>
    <CUSTID>50001989</CUSTID>
    <COD_NO>123123123123</COD_NO>
    <COD_LINK_ACCT>50200000003859</COD_LINK_ACCT>      
    </Record>